Development of a new functional elastomeric material and its application to semi-active vibration control of machines and structures

本文制备了刚度可控弹性体复合材料MRE，并测试了其场相关静态和动态性能。当这种材料受到外磁场作用时，粒子间力的强度会发生变化，因此其表观弹性模量随磁场的大小而变化。然后，结合变刚度控制方案，将MRE应用于隔振支座。实验研究表明，基于半主动开关控制算法的中间MRE支架可以有效地降低受基础激励的一自由度结构的振动。

In this study, the stiffness controllable elastomer composites named as MRE is fabricated and their field-dependent static and dynamic properties are tested. When such material is exposed to external magnetic field, the strength of the inter-particle force will change and thus its apparent elastic modulus is changed depending on the magnitude of the field. The MRE is then applied to the vibration isolating mounts along with variable stiffness control scheme. Experimental investigations show that the vibration of the one-degree of freedom structure that is exposed to base excitation can be effectively reduced by the intermediating MRE mounts according to the semi-active on/off switching control algorithm.